James neale



Viaitrh tatrs gatrat @ffice lJAMESv NEALE, OF TRENTON, NEW JERSEY,ASSIGNOR TO HIMSELFAND MATHEW HlGGINSpOF NEW YORK,` N. Y.

Letters .Patent No. 65,687., ddteal June 11, 1867.

IMPROVEMENT In saws.

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TO ALL WI-IOM IT MAY CONCERN:

Be itknown that I, JAMES NEALE, of 'li-enton, in the county of Mercer,and State of New Jersey, have invented a newand useful Improvement inDetachable Saw-Teeth; and I do .herebydeclare that the following v is afull, clear, and exact description 4of the same, reference being had tothe accompanying drawings, making a part of this specification,in'which-e l Figure 1 is a side viow of a portion of a saw'having itsteeth attached according to my invention.

Figure 2 is a transverse section of the same taken in the line a' a', ofg. l.

Figure S'is a detached side view of the tooth alone. A g

Figure his a detached side view of a portion of th'e plate or body ofthe saw.

Figure 5 is.a detached side view of a clamping piece employed insecuringthe tooth to the saw-plate.

Similar letters of reference indicate corresponding parts in allthefigures.

This invention consists in a novel means of attaching the teeth ofa sawto the body or plate thereof, whereby the teeth are very firmly heldintheir places and at the same time rendered easily detachable whendesired. 1 v g To enable others to understand the nature andconstruction of my invention, I will proceed to describe it withreference to the drawings. i v

A represents the saw-plate of ,a reciprocating saw, such as is employedin saw-mills for cutting logs into' boards or timbers. Formed atsuitable distances apart in the front edge of' this plate A are anydesired number lof recesses or sockets, of which one is shown in fig. 4,at A', in which the teeth are secured as will be presently set forth.The front edge of the saw-plate is of'sueh shape or configuration thatit projects outward considerably farther at the real-most side t of eachsocket A', than at the foremost end 6 of such socket, as represented infigs. 1 and 4. The saw-plate at the` said rear and forward ends of eachsocket is bevelled at each side, or in other words made V-shaped in itscross-section, as shown at C', in gs: 2 and 4, while the bottom ofthesad recess or socket is made ilat. The recess or socket A' 'is madelarger at its bottom than it is at the edge of the plate A, so that adove-tail form is given to the said socket. B C represent one of theteeth, the outer or cutting portion Bofrwhich is of any suitable shape,and the linner part or base C of which corresponds in shape with thesocket A', into which it is fitted. There is a V-shaped grooveformedlongitudinally in the rearmost edge of the said base C of thetooth, and one side of the foremost portion of the said base is cutaway, as shown more clearly at d, in g.'3, While the edge of theremaining portion of the said foremost part of the baseiis bevelled tofit one side of the V-shaped end b, of the socket A'. D is a fiatclamping-piece, which is of the same shape and size as the recess formedby cutting away the foremost part of the base A', at d, as just setforth. Tivo holes e are formed transversely in the remaining portion ofthe said foremost part of the base, and

' two corresponding holes e' are formed transversely in theclamping-piccoli), in such manner that when the several parts are placedin proper position they will be securely held together by rivets passingthrough the -said holes, as will be presently fully set forth. TheV-shaped edge c',at the rearmost end a of the socket A', isvplaced inthe V-shaped'groove formed in the rearmost end of the base of the tooth,and the foremost endv of the said base'is pressed inward until thebevelled edge thereof is brought in contact with the side of theV-shaped edge c' of the foremost end b of the socket. The clamping-pieceD is then fitted into the recess formed by.

cutting away thebase C, with its bevelled forward edge resting againsttheoopposite side of the V-'shaped edge e' of the end b, and with itsrearmost edge-fitted closely to the shoulder formed at the rearmost edgeof the recess cl, as shown at f' in g. 2, the said shoulder being placedat an acute angle to the dat bottom of the said recess cl, asrepresented in the said iig. 2. The holes e inthe clamping-piece D beingbrought opposite the holes c in the saw-plate, rivets y of suitable sizeare passed through the said -holes and headed at each en d, thus firmly.securing the clamping-piece to the hase of the tooth, and causing theV-shaped edge of the end Z of the socket to be clamped between theforemost edge of the said clamping-piece, and that of the opposite partof the base of the tooth in the same manner, that the V-shaped edge ofthe rearmost end a of the socket is .confined Vshaped groove in therearrnlost edge of the base C, thus firmly holding the tooth againstlateral displace` ment at the sume time that the dove-tail shape of thesocket prevents' it from being drawn ont therefrom# -By this means theteeth of the s aw are rigidly secured tov the saw-plate, and may also bereadily detached therefrom when desired, and, inasmuch its no rivetholes are made in the seid plete7 all liability of buckling the same bythe expansion of the rivets in heading them is avoided.

I do not claim :t saw-tooth secured by a. lappinfjr plate introducedinto on opening in. the saw-plate below the tooth, es this has beforebeen used, as found in Potent No. 55,375, but it only acts toprevent thetooth sliding ,out from the notch into which it is introduced, and doesnot ect as clamp.

What I claim, and desire to secure by Letters Patent, is-A"sewtoetli-fornied with a, dove-.tailed base and grooved back -settingwithin the recess of the saw-plate, and secured by the clamping-plate Dwithin a recess at the front portion of the bese of the tooth, in themanner set forth. l

JAMES NEALE. Witnesses:

A. LE CLERC, J. W. CooMRs.

